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| Study on Degradation of Guaiacol by Catalytic Ozonation Using AlOOH as Catalyst |
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| DOI：10.11981/j.issn.1000-6842.2017.02.17 |
| Key Words:AlOOH; ozone; guaiacol; catalyticozonation |
| Fund Project:天津市科委重大专项(［2014］14ZCDGNC00097)；天津市农委重大专项合作项目(［2014］201404140)。 |
| Author Name | Affiliation | | 王 昶 | 天津科技大学海洋与环境学院,天津,300457 | | 闫晓菲 | 天津科技大学海洋与环境学院,天津,300457 | | 于金鹤 | 天津科技大学海洋与环境学院,天津,300457 | | 刘 芳 | 天津科技大学海洋与环境学院,天津,300457 | | 李 丽 | 天津科技大学海洋与环境学院,天津,300457 |
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| Abstract: |
| AlOOH was chosen as catalyst for ozonation of guaiacol, the model compound of lignin. A series of experiments were conducted to investigate the influence of oxidation condition on the degradation of guaiacol and CODCr removal efficiency, such as the kind of catalyst, ozone flow rate, initial pH value of reaction system and catalyst dosage. The reaction mechanism was preliminary studied by liquid chromatography analysis and addition of hydroxyl radical scavenger tert-butyl alcohol (TBA). The results showed that compared with sole ozonation, catalytic ozonation could improve the efficiencies of guaiacol degradation and CODCr removal. The degradation rate of guaiacol （200 mg/L） reached 100% and the CODCr removal efficiency was 89.3% after 40 min reaction at pH value of 5.4 when the ozone concentration, ozone flow rate, and the dosage of AlOOH were 13.32 mg/L, 0.51 L/min and 5 g/L, respectively. Both hydroxyl radical and O3 played an important role on the degradation process of guaiacol. |
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